Automatic carbureter-regulator



J. T. YOUNG. AUTOMATIC CARBURETER REGULATOR.

APPLICATION FILED JULY Patented July 13, 1920.

Iiillsilllk JAMES '1. YOUNG, OF ST. LOUIS, MISSOURI.

AUTOMATIC CARBURETER-REGULATOR. I

Specification of Letters Ifatent, Pat ted July 13, 1920.

Application filed July 14, 1919. Serial No. 310,731.

To all whom it may concern:

Be it known that I, JAMES T. YOUNG, a citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Automatic Carbureter Regulators; and I do declare the following to be a full, clear, and" exact description of the invention, suchas will enable others skilled in the art to which 'it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to fuel feed regulation for explosion engines and particularly to means for varying the effective port area of the fuel inlet of a carbureter in proportion to the heat generated by the motor. For example, when an explosion motor 1s cold, a richer mixture is required in the combustion chamber than when the engine is lZOt and as the engine heats up, the mixture may be progressively decreased in richness until the correct mixture is provided for general operating conditions.

I have provided means whereby the engine may start with an initially rich mixture, the

richness of which will be gradually decreased as the engine heats up and this may be accomplished automatically in response to the heat generated by the motor or engine. 4

The figure in the drawing is a v1ew of a manifold of an engine, a carbureter insection, and a thermostat with mechanism controlled thereby for opening the oil inlet of the carbureter.

Referring now to the drawings by numerals of reference.

1 designates the thermostat casing having an inlet 2 and an outlet 3 adapted to communicate with a suitable heating medium,

the heating medium being adapted to be heated by the exhaust pipe so that the body of air or heating medium 4 in casing 1 will act upon the expansible thermostat elements 5 fixed within the casing 1 and connected to an adjustable reciprocatory rod 6, engaging a slot 7 in the horizontally disposed lever 8 pivoted at 9 to the standard 10 on the casing 1. The end 11 of the lever 8 opposite to the end 7 is provided with a slot 12 which is engaged by ahead 13 connectedtoarotatable rod 14 provided with a threaded portion 15 engaging the internally threaded portion 16 of the bracket 17 carried by the casing 1.

The lower end of the rod 14 is provided with a bifurcated portion or yoke 18 engaging a rotatable disk 19, vertically slidable with respect to the fork ends, 20 and 21, so

that when the disk 19 is rotated, the needle valve 22 will be rotated so that the threaded portion 23 in bearing 24 will cause the valved end 25 to vary the effective opening of theinlet port 26, as will be presently explained.

The device is so constructed that it does not necessarily materially interfere with the known general arrangement of controlling or throttling the mixture to the explosion chambers of the motor, the control forming a part of my invention, being responsive only to changes in temperature about the explosion chamber of the engine. For example, it is customary to prime engines during cold weather to start them. This has been considered necessary because the carbureter oil inletport valve is set to open under normal operating conditions so as to provide the proper mixture after the engine heats up and the effective port area of such a carbureter will not be extensive enough to admit the suflicient amount of oil to make a rich enough mixture when the engine is cold.

ment to the shaft 14 and since shaft 14 is in while the forks 20 and 21 are free to slide.

in an upward direction, they will rotate with shaft 14 and thereby actuate disk 19. As disk 19 is fast on valve rod 22, a rotative movement will be imparted to said valveso that the threaded connections 23 and 24 will cause the valve to unseat the point 25 to increase the effective port area of the inlet 26. Therefore, a relatively. rich mixture will be provided for the combustion cylinders. When, however, the engine has been running lorg enough to raise the temperature of the heating medium from the exhaust pipe or other convenient port of the engine, it will circulate through pipes 2 and 3 and enter the casing 1, causing the expansive and contractible thermostat elements 5 to expand and exert an upward force against end 7 of lever 8, depressing end 11 and by pressing upon the end of shaft 14, rotate the same to impart a rotative movement to disk 19 and partially close the opening 26 so as to reduce the hydrocarbon content of the mixture.

The thermostat elements 5 are in the form of a bellows of metal; this form of thermo stat being well known, no detail description of the same is considered necessary in this particular case. It is apparent, however, by reference to the drawing, that the rod 6 may be adjusted with respect to the thermostatic collar 27 so that the proper adjustment of the valve in 25 may be accomplished.

What I claim and desire tosecure by 'Letters-Patent is:

1. In a thermostatically-operated controlling device for valves, a casing, means for varying the temperature within the casing, a thermostatic'element within the casing and having a part projecting therethrough, a rotatable shaft, connections between the shaft and the projecting part, said shaft having an externally threaded portion whereby a longitudinal movement thereof will impart a rotative movement thereto, and a threaded bracket engaging said threaded portion.

2. In a device of the class described, a shaft having a bifurcated portion at one end, a lever connected to said shaft at the other end, a relatively deep pitched threaded portion on the shaft, a brackethaving threads corresponding to said threaded portion whereby said shaft is rotated in response to movement of said lever, a casing having a thermostatic element therein, means connected to the thermostatic element and projecting through said casing, and a lever connected to said means and to the'lever en-' gaging portion of the shaft.

3. A carbureter control comprising a liquid casing, a thermostatic element within the liquid casing and expansible and retractable inresponse to variations in the temperature of the liquid in the casin a pivoted lever mounted on the casing and connected to the thermostatic element, a bearing projecting from the casing, a threaded shaft in the bearing rotatable in response to movement of said lever, a connection between the shaft and the lever, and a bifurcated end on said shaft to engage the valve stemof a carbureter.

4. A carbureter valve control comprising a fluid casing, a thermostatic element in. the casing, expansible and retractable in response to variations in the temperature of the fluid in the casing, a vertical shaft rotatable in responseto the movement of the thermostatic element, and means on the end of the shaft for connection with the valve element-of a carbureter.

In testimony whereof I afiix my signature.

' JAMES T. YOUNG. 

